公开(公告)号：US20200137350A1

公开(公告)日：2020-04-30

申请号：US16566135

申请日：2019-09-10

Applicant: Analog Devices Global Unlimited Company

Inventor： Isaac MOLINA HERNANDEZ ,  Niall D. O'Connell ,  Sean M. MULLINS

IPC: H04N7/08 ,  H04N7/14 ,  H04N11/08 ,  H04N9/81 ,  H04N21/4363

Abstract: Disclosed herein are systems and methods for performing DC offset correction of a video signal received over an AC-coupled video link. In one aspect, a transmitter is configured to compute, and provide to a receiver, metadata indicative of a statistical characteristic (e.g., an average or a sum of values) for a group of active pixels of a video signal acquired by a camera. The receiver is configured to compute an analogous statistical characteristic on the video signal received over an AC-coupled video link, and to perform DC offset correction by modifying one or more values of the received video signal based on a comparison of the statistical characteristic computed by the receiver and the one computed by the transmitter and indicated by the received metadata.